LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Where Is This Oil Leak Comming From (pics Inside)

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Old 11-04-2006, 12:57 PM
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*UPDATE* Where Is This Oil Leak Comming From (pics Inside)

can it be a possibilty that it can spew out of the oil dip stick tube??
(new pics below)

Last edited by playa7970; 11-28-2006 at 09:01 PM.
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Old 11-04-2006, 02:36 PM
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mine looks the same way, im thinking its coming from the rear main. Have you checked the rear of your intake?.
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Old 11-04-2006, 02:52 PM
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the best way to look for a leak is run the car, let it sit and when it is cool enough to the touch, start feeling all around starting at the highest point with components that use gaskets and/or sealant.
More than likely that leak is coming from the back of the intake. Feel around the back of the intake and see.
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Old 11-04-2006, 03:06 PM
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thats odd because this is a new motor new felpro seals ex.. hmmm could still be possible i guess ill wipe everything down and check again could it be comming from my valve cover breather?
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Old 11-04-2006, 03:13 PM
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Originally Posted by playa7970
thats odd because this is a new motor new felpro seals ex.. hmmm could still be possible i guess ill wipe everything down and check again could it be comming from my valve cover breather?
I don't think so. Doesn't matter if it is a new motor... sealing the intake can be a finiky process and if proper steps aren't taken then it'll leak.
Just start feeling around the back of the block where the intake meets the block and see if it's wet w/ oil. If it is then most likely that's your source. Also check the back of the clylinder heads just below where the valve cover meets the head. If it's wet there that could also be either a primary or secondary source.
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Old 11-04-2006, 04:00 PM
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First thing I would check is the dipstick. It is fairly common for it to leak. Just pull it out and put a little silicone around the part that goes in the engine.
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Old 11-04-2006, 07:15 PM
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i would have to agree with bingo, check the dipstick tube where it goes into the block. had the same problem with mine and some rtv silicone fixed it right up. also the back of the intake was a b!tch to seal up for me, it took me 3 tries to get it right and so far so good. good luck.
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Old 11-17-2006, 01:08 AM
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ok well im pretty sure i sealed up the dip stick tube with rtv iv posted some more pics of the leak because i cannot seem to find it could it possibly be shooting out of my (dont laugh) valve cover breather? iv installed one because the baffle was removed so i ordered new lt4 valve covers and going to put pcv system back on if you look closely you can see oil on the plug wires and some of the harnesses






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Old 11-17-2006, 07:16 AM
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You don't have the PCV valve systen on the car?If not that's your problem,it is spuing oil out the crank case breather.The PCV valve stands for Positive Crankcase Ventelation and with out it the presure from the pistons going down has no where to go but out the crank case breather(along with OIL).Good Luck!!!
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Old 11-17-2006, 11:00 AM
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Originally Posted by 95zsean
You don't have the PCV valve systen on the car?If not that's your problem,it is spuing oil out the crank case breather.The PCV valve stands for Positive Crankcase Ventelation and with out it the presure from the pistons going down has no where to go but out the crank case breather(along with OIL).Good Luck!!!
Thats not always true. I ran that setup for almost a year and never had any problems with it.
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Old 11-17-2006, 11:15 AM
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Originally Posted by 95zsean
You don't have the PCV valve systen on the car?If not that's your problem,it is spuing oil out the crank case breather.The PCV valve stands for Positive Crankcase Ventelation and with out it the presure from the pistons going down has no where to go but out the crank case breather(along with OIL).Good Luck!!!
well that explains it at the time of the install i had no choice but to put a breather because my stupid machanic eliminated the baffle all together but hopefully it can be fixed ones i get my lt4 covers
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Old 11-17-2006, 01:37 PM
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Is it wet around the breather? That would tell you if it is coming from there or not. Honestly, it looks like you missed the oil filler tube when you filled the car up will oil. It looks too clean to have come from inside the engine.
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Old 11-17-2006, 02:09 PM
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i deff think its from the breather now that i felt around it only time will tell until i get my valve covers but thanks for all the help benji
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Old 11-17-2006, 05:27 PM
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You could wrap a piece of rag around the breather and drive it just to make sure the oil isn't coming from somewhere else .
RG
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Old 11-28-2006, 08:59 PM
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*update* Leak still remains heres what i did so far rtv'd the dip stick tube to the block, bought the lt4 valve covers and put the pcv system back on to eliminate the breather and the leak is still there and cannot figure out where its comming from any ideas?
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